A dashboard presents two linked visualizations of product category distribution from a May 2022 dataset. The first is a bar chart showing counts per category with interactive tooltips, while the second is a pie chart displaying the same data. Both use D3 v7 APIs including `d3.csv`, `d3.rollup`, `d3.scaleBand`, `d3.scaleLinear`, `d3.pie`, and `d3.arc`, rendered as SVG with hover effects and legends.